Home / 18,816.50-28,319.26-14,160.62

Finding the Fourth Proportional to 18,816.50, 28,319.26 and 14,160.62

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Solution

The fourth proportional to 18,816.50, 28,319.26 and 14,160.62 is: 21,312.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.50 : 28,319.26 = 14,160.62 : x
  2. Step 2: Convert to fraction form
    18,816.50/28,319.26 = 14,160.62/x
  3. Step 3: Cross multiply
    18,816.50x = 28,319.26 × 14,160.62
  4. Step 4: Simplify right side
    18,816.50x = 401,018,279.54
  5. Step 5: Solve for x
    x = 401,018,279.54/18,816.50
  6. Step 6: Final answer
    x = 21,312.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.